NPPES file of Aug 9, 2026

Gregory Scallon, P.A.

Physician Assistant · Phoenix, AZ

Gregory Scallon, P.A. is a physician assistant with a practice address in Phoenix, Arizona, and NPI 1891722302, issued on Jun 28, 2006. Check the license (Arizona 2563, as entered in NPPES) with the Arizona board that licenses this profession; the Medicare figures below come from public CMS files.

Record from CMS NPPES, file of Aug 9, 2026 · Medicare files 2024 · method · Verify with CMS →

NPPES recordNPPES file of Aug 9, 2026
1891722302
Name
Gregory Scallon
Credential
P.A.
Primary taxonomy
Physician Assistant 363A00000X
License number
2563 AZ
Self-reported in NPPES; status is on the state search
Practice location
3411 N 5TH Ave Ste 209, Phoenix, AZ 85013
Phone
(602) 789-0344
Enumerated
Jun 28, 2006
Record last updated
Jan 16, 2018 (not updated in 8 years: call before relying on the address or phone)
Fax
(602) 789-8389
Medicaid ID
634370 AZ
Entity
Type 1 · individual
Public record from CMS NPPES (open it on the CMS NPI Registry). A record is not a license: verify it with the state board.
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Also registered at 3411 N 5TH Ave Ste 209

A shared address usually means a shared clinic or building; it does not show who employs whom.

  1. Brian Chasin, MDInfectious Disease Physician1952329328
  2. Melissa Hoover, PAPhysician Assistant1992789135
  3. Jasmine Kelley, MDInternal Medicine Physician1568444644
  4. Reecha Madan, MDGeriatric Medicine (Family Medicine) Physician1770746554
  5. Julie Mays, PAPhysician Assistant1164463568
  6. Liviu Vladoianu, ACNPC-AGAcute Care Nurse Practitioner1649797218

Verify Gregory Scallon in five checks

  1. 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
  2. 2LicenseActive license and public ordersWhich Arizona board licenses this profession
    Search for license 2563
    Check the board
  3. 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
  4. 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
  5. 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
Find the Arizona license search

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21% more Medicare Part D claims than the average physician assistant in 2024

1,007 Medicare Part D claims for 153 beneficiaries, against an average of 830 among the 101,058 providers of this specialty who prescribed in Part D. 70 claims were for opioids.

  1. Gregory Scallon1,007
  2. Specialty average830

Most prescribed

  1. Gabapentin47 claims
  2. Amlodipine Besylate41 claims
  3. Furosemide31 claims
  4. Donepezil Hcl28 claims
  5. Metformin Hcl27 claims
  6. Tradjenta26 claims

Source: CMS Medicare Part D Prescribers by Provider and Drug, 2024 (data.cms.gov). Part D covers prescriptions for Medicare patients only; drugs with fewer than 11 claims are not published.

923 physician assistant records list a practice address in Phoenix

They are 923 of the 31,399 NPPES records with a practice address in Phoenix, and 3,666 physician assistant records in Arizona.

Other physician assistant records in Arizona

  1. Lindsey Abajian, PA-CPhoenix, AZ1306125620
  2. Allison Abbey, PA-CCottonwood, AZ1871257246
  3. Sarah Abbott, PAPhoenix, AZ1609969666
  4. Kristen Abel, PA-CMesa, AZ1346037181
  5. Abigail Abellana, PA-CScottsdale, AZ1629931670
  6. Heidi Abersfeller, PA CCasa Grande, AZ1356379754
  7. Collin Abitz, PAGlendale, AZ1376342386
  8. Colleen AbramsChandler, AZ1407285448
  9. Madison AbramsSurprise, AZ1609495571
  10. Michael AbrilScottsdale, AZ1245854728

Common questions

What is Gregory Scallon, P.A.'s NPI number?

Gregory Scallon, P.A.'s National Provider Identifier (NPI) is 1891722302, issued on Jun 28, 2006. An NPI identifies a provider in billing; it is not a license.

Where is Gregory Scallon, P.A. located?

The NPPES record lists a practice address at 3411 N 5TH Ave Ste 209, Phoenix, AZ, 85013. Phone: (602) 789-0344. Providers update this record themselves, so call before visiting.

How can I verify Gregory Scallon, P.A.'s license?

NPPES lists Arizona license number 2563, as entered by the provider. Search the Arizona board that licenses this profession; the NPPES record confirms identity only.

How much does Gregory Scallon, P.A. prescribe under Medicare Part D?

In 2024, Gregory Scallon, P.A. had 1,007 Medicare Part D claims for 153 beneficiaries; the average among physician assistant prescribers was 830. Part D covers Medicare prescriptions only.

Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. Medicare files from data.cms.gov. An NPI identifies who bills; it is not a license.

Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.